Totalizer engaging controls



Aug. 21, 1962 G. HAPP 3,050,245

TOTALIZER ENGAGING CONTROLS Filed April 15, 1958 13 Sheets-Sheet 2 277299 276 L @J c INVENTOR GEORG HAPP iwf HIS ATTORNEYS Aug. 21, 1962 G.HAPP TOTALIZER ENGAGING CONTROLS 13 Sheets-Sheet 3 Filed April 15, 1958INVENTOR GEORG HAPP www HIS ATTORNYS Aug. 21, 1962 G. HAPP 3,050,245

TOTALIZER ENGAGING CONTROLS Filed April 15, 1953 13 Sheets-Sheet 4 FIG.3 4

INVENTOR GEORG HAPP WW M m HIS ATTORNEYS Aug. 21, 1962 a. HAPP TOTALIZERENGAGING CONTROLS l3 Sheets-Sheet 5 Filed April 15. 1958 INVENTOR GEORGHAPP IS ATTORNEYS Aug. 21, 1962 G. HAPP 3,050,245

TOTALIZER ENGAGING CONTROLS Filed April 15, 1958 15 Sheets-Sheet 6 HISATTORNEYS Aug. 21, 1962 e. HAPP TOTALIZER ENGAGING CONTROLS l3Sheets-Sheet 7 Filed April 15, 1958 INVENTOR GEORG HAPP BY fl 14 ISATTORNEYS l3 Sheets-Sheet 8 Filed April 15, 1958 FIG.9

INVENTOR GEORG HAPP W HIS ATTORfiEYS Aug. 21, 1962 G. HAPP 3,050,245

TOTALIZER ENGAGING CONTROLS Filed April 15, 1958 15 Sheets-Sheet 9INVENTOR GEORG HAPP IS ATTORNEYS Aug. 21, 1962 G. HAPP 3,050,245

TOTALIZER ENGAGING CONTROLS Filed April 15, 1958 13 Sheets-Sheet 10 (3'9324 SIS 322 FIG. I8

INVENTOR GEORG HAPP IS ATTORNE YS Aug. 21, '1962 G. HAPP 3,050,245

TOTALIZER ENGAGING CONTROLS Filed April 15, 1958 13 Sheets-Sheet l1 3|4am "111 333 207 313 1 n 332 32! 328 f 33l m 2. INVENTOR 329 11:30 324325 6.527 GEORG HAPP v 3l5 WW x4 Mm,-

ATTORNEYS Aug. 21, 1962 G. HAPP 3,050,245

TOTALIZER ENGAGING CONTROLS Filed April 15, 1958 13 Sheets-Sheet l2INVENTOR GEO RG H APP ig yl MA'LTORNEYS A g- 1962 G. HAPP 3,050,245

TOTALIZER ENGAGING CONTROLS Filed April 15. 1958 13 Sheets-Sheet 13INVENTOR GEORG HAPP 1s ATTORNEYS United States Patent Ofi ice 3,050,245Patented Aug. 21, 1962 3,050,245 TOTALIZER ENGAGING CONTROLS Georg Happ,Augsburg-Goggingen, Germany, assignor to The National Cash RegisterCompany, Dayton, Ohio, a corporation of Maryland Filed Apr. 15, 1958,Ser. No. 728,718 2 Claims. (Cl. 235-7) This invention relates to cashregisters or similar accounting machines having an item totalizeradapted to receive both positive entries and negative entries, and isparticularly concerned with arrangements to control the actuation of theitem totalizer.

Machines provided with an item totalizer adapted to receive bothpositive and negative entries have been known previously, but suchmachines are expensive to manufacture, due to the complicatedarrangements required to control the actuation of the item totalizer,and have imposed a considerable load on the machine-operating mechanismdue to the weight of the parts which have had to be shifted.

It is, therefore, the main object of the present invention to provide amachine in which the arrangements to control the actuation of the itemtotalizer comprise the minimum number of parts, thereby rendering themachine relatively cheap to manufacture.

A further object of the invention is to provide arrangements whereby theload on the machine-operating mechanism is reduced to the minimum.

Accordingly, the invention comprises a cash register or similaraccounting machine adapted for the entry of single items and a series ofitems constituting a multipleitem entry, including amount keys; controlkeys; an addsubtract totalizer; a group totalizer; two sets ofactuators, the first set of actuators being settable under control ofthe amount keys and cooperating with the item totalizer, the second setof actuators cooperating with the group totalizer; a coupling mechanismfor coupling the two sets of actuators together for simultaneousoperation; and a coupling control mechanism controlled by the controlkeys in such a manner that, upon depression of a certain one of thecontrol keys, the two sets of actuators are coupled together, so that aset-up amount can simultaneously be added into both the item totalizerand the group totalizer, whereas, upon depression of certain other onesof the control keys, the coupling mechanism is rendered ineffective tocouple the two sets of actuators, so that only the first set thereof canbe effective.

The above and other, subsidiary, features of the present invention, asapplied, by way of example, to one manner of carrying it into elfect,will now be described and are illustrated in the accompanying drawings.

In the drawings:

FIG. 1 is a plan view of the keyboard of the machine,

FIGS. 2A and 2B, taken together, show a cross section through themachine to the right of one of the banks of amount keys,

FIG. 3 is a front view of the mechanism for coupling and uncoupling thetotalizer-actuating segments with or from each other,

FIG. 4 is a side view of FIG. 3,

FIG. 5 is a right side view of the control key bank and of the mechanismfor controlling the uncoupling of the totalizer-actuating segments,

FIG. 6 is a right side View of the uncoupling mechanism for thetotalizer-actuating segments,

FIG. 7 is a front elevation of part of the totalizer lines of themachine, and the mechanism for shifting the totalizer lines,

FIG. 8 is a right side view of FIG. 7,

FIG. 9 is a front view of the transmission from the Itemizer key to thecontrol key bank,

FIG. 10 is a right side view of FIG. 9,

FIG. 11 is a left side view of part of the mechanism for controlling theselection of either the positive or the negative wheels of the itemtotalizer,

FIG. 12 is a left side view of the clerks key bank, and of aninterlocking mechanism associated therewith,

FIG. 13 is a right side view of the setting mechanism associated withthe clerks key bank, and the mechanism for selecting the clerkstotalizers,

FIG. 14 is a front elevation of a portion of the mechanism for selectingthe clerks totalizers,

FIG. 15 is a front elevation of a portion of the mechanism for selectingthe clerks totalizers,

FIG. 16 is a right side view of the mechanism for determining the timeof engagement and disengagement of the totalizer-actuating segments,

FIG. 17 is a plan view of part of the mechanism shown in FIG. 16,

FIG. 18 is a right side view of parts of the levers for controlling theengagement and disengagement of the totalizer-actuating segments,

HG. i9 is a right-side view of the mechanism 'for arresting the itemtotalizer in zero position during totaltaking and sub-total-takingoperations,

FIG. 20 is a left side view of various interlocking mechanismsassociated with the control key bank, and

FIG. 21 is a right side view of an amount key bank and part of themechanism for controlling the zero stop pawl during total-taking andsub-total-taking operations.

Keyboard The keyboard of the illustrated machine includes four rows ofamount keys (FIG. 1), a row of insertable clerks keys 101, a row ofcontrol keys 102-105, and an temizer key 106, which is connected to, andoperates, a blind key stem in the row of control keys 102-- 105.

The control keys 102-406 are what are termed motorized keys; that is,depression of any one of these keys initiates a cycle of machineoperation, provided that certain prior conditions have been fulfilled.For instance, the Single Item key 102, the Subtract key 103, and theltemizer key 106 can only be depressed to initiate a machine cycleprovided that a selected one of the four clerks keys 101 has previouslybeen depressed, whereas the Total key 104 and the Sub-Total key 105 canonly be depressed to initiate a machine cycle provided that a selectedone of the four clerks keys 101 has previously been depressed and thatno one of the amount keys 100 has previously been depressed. Theinterlocks between the amount keys 100, the clerks keys 101, and thecontrol keys 102-106 are known and, therefore, are described hereinafteronly where necessary for an understanding of the present invention.

The Single-Item key 102, the Subtract key 103, and the Total key 104each have associated therewith an item counter, the wheels 107 of whichare visible through openings 108 in the keyboard cover plate. Depressionof any one of the control keys 102, 103, or 104 causes its related itemcounter to be advanced by one unit in order to provide a count of thenumber of times the machine has been cycled under control of each ofthese keys. Each item counter is resettable to zero by rotation of itsrelated resetting wheel 109, which wheels protrude through openings inthe keyboard cover plate and are placed under the control of a machinemain lock (not shown) to prevent resetting of the item counters by anyperson who is not in possession of a key to the machine main lock.

The machine includes two superimposed totalizer lines having anadd-subtract item totalizer mounted on an upper totalizer line I (FIG.2A) and four interspersed totalizers, selected under control of the fourclerks keys 101 (FIG. I), mounted on a lower totalizer line II (seeFIGS. 7 and 8).

Depression of the Single Item key 102, subsequent to the setting up ofan amount by depression of selected amount keys 100 and the depressionof a selected one of the clerks keys 101, causes the set-up amount to beentered additively only into the totalizer on line II corresponding tothe selected clerks key 101, printed on an issuing ticket and on adetail strip, and displayed on indicators, as will be explained indetail hereinafter. Near the conclusion of the machine cycle, thedepressed amount keys 100 and the selected clerks key 101 willautomatically be released for return to their normal positions.

When the machine is released at the commencement of a multiple-itemtransaction by depression of the Itemizer key 106, subsequent to thesetting up of an amount by depression of selected amount keys 100 andthe depression of a selected one of the clerks keys 101, the amount setup is simultaneously added into the item totalizer on line I and intothe totalizer on line II corresponding to the selected clerks key 101.The amount is also printed on the issuing ticket and on the detailstrip, and is displayed on the indicators. Near the conclusion of themachine cycle, the depressed amount keys 190 are automatically releasedfor return to their normal positions, the selected clerks key 101 beingretained in depressed position until the conclusion of the multipleitemtransaction by mechanism which is well known and, therefore, notdescribed herein.

When it is desired to initiate a subtract operation during the course ofa multiple-item transaction, the amount to be subtracted is first set upby depression of selected amount keys 100, followed by depression of theSubtract key 103. The amount set up is subtracted from the itemtotalizer on line I but, in the present machine, is not subtracted fromthe totalizer on line II which corresponds to the clerks key 101depressed at the commencement of the multiple-item transaction. Theamount is also printed on the issuing ticket and on the detail strip,together with a subtract symbol, and is displayed on the indicators.

The Total key 104 controls the item totalizer on line I, and depressionthereof initiates a machine cycle in which the item totalizer is resetto Zero, the amount contained in the item totalizer being entered intothe differential mechanism, printed upon the issuing ticket and upon thedetail strip, and displayed on the indicators. As depression of the key104 terminates a multiple-item transaction, the clerks key 101 depressedat the commencement of the multiple-item transaction is released nearthe end of the machine cycle.

The Sub-Total key 105 controls the item totalizer on line I in a similarmanner to the Total key 104, with the exceptions that the total takenfrom the item totalizer is re-entered thereinto and that the depressedclerks key 101 is not released at the end of the machine cycle.

The four interspersed totalizers on line II cannot be reset from themachine keyboard with the machine main lock in its normal Registerposition, but can be reset one after another by depression of eachclerks key 101 followed by depression of the Single Item key 102 whenthe machine main lock has been moved to a special Reset position,thereby preventing resetting of the totalizers on line II by persons notin possession of a key to the machine main lock.

From the above description, it will be apparent that, in the presentmachine, subtractive items are entered only into the item totalizer,and, therefore, the total of all subtractive items recorded on thedetail strip must be obtained in order to enable the totals contained inthe totalizers on line II to be balanced against the cash received.

Setting Mechanism The differential setting mechanisms of the illustratedmachine are of known construction, as illustrated in British Patent No.703,886, published February 10, 1954, and, therefore, only a briefdescription of the setting mechanism associated with one of thedenominational orders of amount keys will be given hereinafter.

Mounted on a machine main shaft (FIGS. 2A and 2B) are a pair of settingmembers 111 and 112, the first of which is hereinafter designated as theamount differential member 111 and the second of which is hereinafterdesignated as the complementary member 112. A beam 113 is pivotallysecured at one of its ends to a pin 114 in the complementary member 112and has its other end pivotally secured to a pin 115 in the amountdifferential member 111, so that movement of the beam 113 impartsopposite rotary movements to the pair of setting members.

Each beam 113 has associated therewith a cam member 117 mounted on a rod116 supported by two arms 119 (only one of which is shown), which armsare pinned to a shaft 118. A roller 120 is provided at each end of therod 116, and each roller cooperates with a cam 121 of a pair of camspinned to a cam shaft 122. When the cam shaft 122 is drivencounter-clockwise (FIG. 2B) by a known and, therefore, not describeddriving mechanism, cooperation of the cams 121 with the rollers 120rocks the arms 119 and the shaft 118 counter-clockwise (FIG. 213), so asto force each cam member 117 against its beam 113 and to move the lattertoward the machine main shaft 110.

Movement of the beam 113 toward the shaft 110 causes the amountdifferential member 111 to rock counterclockwise and the complementarymember 112 to rock clockwise until an upper end portion of each of suchsetting members comes into contact with the opposite sides of the stemof a depressed amount key 100 (for instance, the stem of the 5 key,shown in dotted lines in FIG. 21) or until both have been set accordingto the value contained in the item totalizer, as will be explainedlater.

When no one of the amount keys 100 in a key bank has been depressed, azero stop pawl 124, mounted on a pin 123 in the key frame, normallyblocks counterclockwise movement of the amount differential member 111.In the latter case, the complementary member 112 is moved clockwiseuntil, in the manner described later herein, it reaches a set positioncorresponding to that of the blocked amount differential member 111.FIGS. 2A and 2B show the zero stop pawl 124 in its inoperative position,in which position it was moved by mechanism to be described hereinafterin connection with the taking of a total or a sub-total from the itemtotalizer.

Each bank of amount keys 100 has associated therewith a slidably-mounteddetent 127, having nine projections 125 and a slot 126. A pin 128 on thezero stop pawl 124 protrudes through the slot 126 and has one end of aspring secured thereto, the other end of the spring being secured to apin 129 in the key frame, so as to tend to rock the zero stop pawl 124clockwise. Pins 131, secured to the stems of the amount keys 100, bearupon cam surfaces of the projections 125 of the detent 127 when theamount keys are depressed, so as to move the detent 127 downwardly.

Upon downward movement of the detent 127, the righthand edge of its slot126, which normally engages the pin 128 of the zero stop pawl 124, movesthe latter counter-clockwise (FIG. 2A), against the action of the spring130, out of the path of movement of the amount differential member 111.

Restoration of the amount differential members 111 and 112 to their homepositions occurs, in known manner, through two resetting arms 132 and133, mounted on the rod 116 and each carrying a pin 134 and 135,

respectively. The pins 134 and 135 are guided in long arcuate slots inthe setting members and, upon clockwise return movement of the arms 119and the rod 116, engage the right-hand ends of said'long slots, so as torestore the setting members to their home positions.

During the interval between the setting and restoring movements of thesetting members, the latter are aligned in set positions by means ofteeth on the amount differential members 111 being engaged by a tooth oneach of a plurality of aligning arms 137 pinned to a shaft 136. Themechanism for rocking the shaft 136 so that the teeth on the arms 137engage the teeth on the amount differential members 111 is not describedherein.

Indicator and Printer Setting Mechanisms Freely mounted on a hub 138 ofthe complementary setting member 112 is a forwardly directed printersetting gear segment 139, which, through a link 14% extending rearwardlytherefrom, is connected to a rearwardly directed indictaor setting gearsegment 141, freely mounted on the cam shaft 122 (FIGS. 2A and 2B).Secured to the amount differential setting member 111 is a pin 142,which extends to the right therefrom for engagement with the upper, rearedge of the gear segment 139. In a like manner, secured to thecomplementary setting member 112 is a pin 143, which extends to the lefttherefrom for engagement with the lower, rear edge of such segment 139.The overall arcuate distance between such upper and lower rear edges ofthe gear segment 139 is such that, when, as set out above, the upper endportions of the setting members 111 and 1112 contact the opposite sidesof the stem of a depressed amount key 1110, the respective pins 142 and143 thereof likewise contact the opposite upper and lower edges of suchsegment 139.

That is, in view of such gear segment and pin arrangespectively, asdescribed above, to what may be termed a .2

closed or set position.

From such construction, it is apparent that, upon each movement of thesetting members 111 and 112 to a closed position, the respective pins142 and 143 thereof engage the related rear edges of the gear segment139 and cause such segment to be moved to a set position correspondingto that at which the members 111 and 112 have been set. Then, upon laterrestoration to home position (as shown in FIGS. 2A and 2B) of suchmembers 111 and 112, through the mechanism described above, the pins 142and 143 move reversely with respect to such gear segment edges, thusenabling the gear segment 139 to remain in that position to which it wasset. From such operation of the gear segment 139that is, not returningto a home position along. with the setting members 111 and 112it isunderstood that the setting movement imparted thereto is actually undercontrol of one or the other only of the setting member pins 142 and 143,depending upon where such segment 139 was left at the close of thepreceding machine operation. If left at a set position lower in numberthan that at which it is now to be set (such as at zero, as illustratedin FIGS. 2A and 2B), the pin 142 of setting member 111 will engage sameand rock it counter-clockwise toward the pin 143 of setting member112which pin 143, incidentally, is at the same time being rocked towardthe segment 139 as setting member 112 is seeking the stem of the newlydepressed amountkey 190. If, on the other hand, such segment 139,through the previous machine operation, was left at a higher in numberset position, the pin 143 will engage same and rock it clockwise as thesetting member 112 is operated. In either instance, when both the amountdifferential setting member 111 and the complementary setting member 112have reached their set or closed positions, Whether controlled by one ofthe key stems or the amount contained in the totalizer (as describedlater), the respective pins 142 and 143 thereof each engages the relatededge of the gear segment 139, thus setting same at a correspondingposition.

As the gear segment 139 is being so set, the interconnected link 14% isshifted thereby for likewise moving the gear segment 141 to a positioncorresponding to that at which the setting members 111 and 112 have beenset. Like the gear segment 139, this segment 141 is also not affected bythe restoration to home position of such setting members. Meshing -withthe teeth of gear segment 141 is a gear 147 secured to one of aplurality of nested tubes (not shown) mounted on a shaft 146, the gear147 being integral with an indicator drum 148. Thus, the setting of thesegment 141 is transmitted to the indicator drum 148.

After the indicator drum 148 has been set, an aligning pin 15 supportedby an arm 149, is engaged, in known manner, in one of a series ofnotches formed on the indicator drum 148, so as to retain and align thelatter in its set position.

The toothed segment 139 meshes with a gear 144, which, in turn, issecured to one of a plurality of nested tubes (not shown) mounted on ashaft 145. Thus, the setting of the segment 139 is transmitted, via thegear 144 and the related nested tube, to a type wheel (not shown) of aprinting mechanism (not shown), which type wheel may be either securedto or geared to the other end of the nested tube.

T otalizer-Actuating Mechanism A totalizer-actuating segment 151, freelymounted on a shaft 153, is connected to the amount differential memher111 by a link 152. The shaft 153 is mounted between a pair of arms 207(see FIG. 3), so that it can be rocked counter-clockwise about a shaft185, in a manner to be described hereinafter, to engage thetotalizer-actuating segment 151 with an intermediate wheel 154. Theintermediate wheel 154 is mounted on a shaft 155, supported by totalizerside frames, and meshes with a gear 156 (FIGS. 2A and 7) secured to agrooved bushing 157, mounted on the totalizer line I. The item totalizeris driven, in a manner described later herein, by means of the actuatingsegment 151, the intermediate wheel 154, the gear 156, and the groovedbushing 157.

A further totalizer-actuating segment 158 (FIGS. 3 and 4) is mounted onthe shaft 153, adjacent the totalizer actuating segment 151 (FIGS. 2Aand 3), for actuating the totalizers on totalizer line II. The segment158 is normally coupled to the segment 151, for unitary movementtherewith, by means of a coupling mechanism to be described.

When the shaft 153 (FIG. 2A) is rocked so as to engage the segment 151with the intermediate wheel 154, the segment 158 (FIGS. 3 and 4) issimultaneously ongaged with an intermediate Wheel 159 (FIGS. 4 and 7)mounted on the shaft and located adjacent the intermediate wheel 154.

The intermediate wheel 159 meshes with a gear 161, mounted on a shaft160 (FIGS. 7 and 8), which, in turn, meshes with a gear 163 mounted on ashaft 162. The gear 163, in turn, meshes with a gear 164, secured to agrooved bushing (FIG. 7), mounted on the totalizer line H. The clerkstotalizers on totalizer line II are, therefore, driven through thesegment 158 (FIGS. 3 and 4), the intermediate wheel 159 (FIGS. 4, 7, and8), the gears 161, 163, and 164 (FIGS. 7 and 8), and the grooved bushing165.

Coupling Mechanism for the Totalizer-Actuating Segments As all thetotalizer-actuating segments 151 and 158 for each denominational orderare coupled with, and uncoupled from, one another in the same manner,only the coupling mechanism associated with one denominational orderwill be described,

The totalizer-actuating segment 151 (FIGS. 3 and 4) is normally coupledwith the totalizer-actuating segment 158, so that, during machineoperations in which the coupling is permitted to remain efiective, theitem totalizer and the selected clerks totalizer are actuatedsimultaneously.

However, the coupling is rendered ineffective when a machine operationis initiated by depression of either the Subtract key 193, the Total key184, or the Sub- Total key 105, since, during such machine operations,only the item totalizer on totalizer line I is actuated.

Secured to a key frame of the bank of control keys are two studs 166 and167 (FIG. on which is slidably mounted a detent 168. The detent 168 hastwo projections, each having a cam surface 169 cooperating with a stud170 secured in the key stem of the Total key and the Sub-Total key 105.A spring 171, tensioned between the detent 168 and a pin in the keyframe, normally retains the detent 168 in the position shown in FIG. 5.

Adjacent the detent 168 is provided a second detent 172 slidably mountedat one end on the stud 167 and at its other end having a pin 173 securedthereto, which pin is slidably engaged within a slot 174 in the detent168. The detent 172 has a projection provided with a cam surface 175,which surface cooperates with a pin 176 secured in the stem of theSubtract key 183. The detent 172 is normally held by a spring 177,tensioned between the detent 172 and a pin secured to the key frame ofthe control bank, so that its pin 173 engages the righthand edge of theslot 174.

A link 178 connects the detent 172 to a coupling control arm 179 (FIGS.5 and 6) mounted on a shaft 1188. Secured to the arm 179 is a pin 181projecting into a slot 182 (FIG. 6) of a lever 183 supported on theshaft 185 by means of a slot 184. The lever 183 has mounted thereon tworollers, 1'86 and 187, one, 186, of which cooperates with a cam 188 andthe other, 187, of which cooperates with a cam 189, the cams beingpinned to the shaft 185. Shortly after commencement of each machineoperation, the shaft 185 is rotated counter-clockwise, causing the cams188 and 189 to impart a downward movement to the lever 183 and torestore the lever 183 upwardly near the conclusion of the machineoperation.

The lever 183 (FIG. 6) has a notch 190, which is provided forcooperation with a pin 191 carried by a lever 192 mounted on the shaft180, which lever 192, through a link 193 (FIG. 5), is connected to anarm 194 pinned to the shaft 153. 1

The shaft 153 has a right-angled recess 195 along its entire length andcarries a coupling control pawl 196 (FIGS. 2A, 3, and 4) for each pairof totalizer-actuating segments 151 and 158. Each of the pawls 196 has alight-angled projection in its boring, which cooperates with the recess195 to secure it on the shaft 153.

Referring to FIGS. 2A and 4, the pawl 196 has a notch 198 forcooperation with a pin 199 secured to a coupling arm 200. The couplingarm 200 is mounted upon a pin 201 secured to the totalizer-actuatingsegment 158 (FIGS. 3 and 4) and has an ear 2 extending to the right, asshown in FIG. 3. The ear 202 can be engaged with, or disengaged from, anotch 203 in each of the actuating seg ments 151 and 158 in a manner tobe described shortly. Each of the coupling arms 200' has a rectangularextension 204, which normally engages the periphery of the shaft 153 butwhich engages the recess 195 of the shaft 153 when thetotalizer-actuating segments 151 and 158 are uncoupled from one another.

Clockwise and counter-clockwise movement, respectively, of the couplingarm 200 (FIGS. 2A and 4) is limited by a pin 205 secured to thetotalizer-actuating segment 158 and protruding into a slot 206 formed inthe coupling arm 280.

Each end of the shaft 153 is mounted in a rocking arm 8 287 (only one ofwhich is shown in FIGS. 3 and 4). The rocking arms 207 are pivotallymounted on the shaft 185 and are rocked in a manner to be describedhereinafter, so that the totalizer-actuating segments 151 and 158 areengaged with and disengaged from the intermediate wheels 154 and 159 incorrect timing.

Mounted on the shaft 153, adjacent each of the rocking arms 287, is anarm 289. The arms 209 carry therebetween an aligning rod 212 for thetotalizer-actuating segments 151 and 158 and are normally held inengagement with pins 211 secured to the rocking arms 207 by springs 210.

When the machine is in normal position, the totalizeractuating segments151 and 158 bear against the aligning rod 212.

When the ear 282 of the coupling arm 200 is disengaged from the notches203 in the totaliZer-actuating segments 151 and 158, each segment 158 isheld in engagement with the aligning rod 212 by a torsion spring 213.Referring to FIGS. 3 and 4, each torsion spring 213 is wound around theshaft 153 and engages, on the one hand, the aligning rod 212 and, on theother hand, the pin 205 secured in each totaliZer-actuating segment 158.

As already described, the totaliZer-actuating segments 151 and 158 arenormally coupled together by the coupling arms 200, and, when a machineoperation is initiated by the depression of either the Single Item key182 (FIGS. 1 and 5) or the Itemizer key 166 (FIG. 1), the said couplingis maintained.

However, when a machine operation is initiated by depression of theSubtract key 103, the Total key 104, or the Sub-Total key 105, thetotaliZer-actuating segments 151 and 158 are uncoupled, so that theappropriate machine operation will be carried out only in conjunctionwith the item totalizer on the totalizer line I.

Depression of the Subtract key 103 (FIG. 5) moves the detent 172 and thelink 178, pivoted thereto, downwardly through the cooperation of the pin176 in its key stem with the cam surface 175.

As already described, the studs (FIG. 5) in the key stems of the Totalkey 104 and the Sub-Total key cooperate with cam surfaces 169 formed onthe detent 168. Therefore, when any one of said keys is depressed, thedetent 168 is moved downwardly. As the pin 173, secured to the detent172, protrudes into the slot 174 of the detent 168, downward movement ofthe latter is imparted to the detent 172 and causes downward movement tobe imparted to the link 178.

Referring to FIGS. 5 and 6, the coupling control arm 179 is rockedcounter-clockwise by downward movement of the link 178. As the pin 18-1.in the coupling arm 179 protrudes into the slot 182 (FIG. 6) of thelever 183, the latter is rocked clockwise by counter-clockwise movementof the arm 179, and the notch is engaged over the pin 191 on the lever192.

Now, when the shaft 185 is driven counter-clockwise at the commencementof a machine operation, the cams 188 and 189, secured thereto andcooperating with the rollers 186 and 187 (FIG. 6), move the lever 183downward, a counter-clockwise movement being imparted, via thepin-and-slot connection 190--191, to the lever 192'.

Counter-clockwise movement of the lever 192 is imparted, via the link193 (FIGS. 5 and 6) and the arm 194, to the shaft 153 (see also FIGS. 3and 4). As a consequence, the coupling control pawls 196, secured on theshaft 153, are rocked counter-clockwise, their notches 198 being movedover the pins 199 secured to the coupling arms 280.

The-curvatures of the notches 198 are eccentric relative to the pins 199in the coupling arms 200, so that, upon counter-clockwise movement ofthe pawls 196 (FIG. 4), the pins 199 are rocked toward the right,rocking the coupling arms 2% clockwise and the ears 202 out ofengagement with the notches 203, so that the totalizeractuating segments151 and 158 are uncoupled from one 9 another. Upon clockwise rocking ofthe coupling arms 2110, their extensions 204 (FIG. 4) enter the recess195 of the shaft 153 as the latter is rocked counter-clockwise by thelink 193.

Thus, during the said machine operation, merely the item totalizer onthe totalizer line I is actuated, as the totalizer-actuating segments15$ for the totalizers on totalizer line 11 are uncoupled from thetotalizer-actuating segments 151 and, during actuation of the segments151, are retained in their normal positions by the spring 213.

Prior to the conclusion of the machine operation, the cams 188 and 189(FIG. 6) on the shaft 185 move the lever 183 upwardly, rocking the lever192 clockwise via the pin-and-slot connection 1911-191. Clockwisemovement of the lever 192 is imparted, through the link 193 (FIGS. 5 and6) and the arm 194, to the shaft 153 so as to cause, on the one hand,the pawls 196 mounted thereon to move out of cooperative relationshipwith the pins 199 in the coupling arms 2% and, on the other hand, theextensions 204 of the coupling arms Ztltl to disengage from the recess195 of the shaft 156. Disengagement of the coupling arms 2% imparts acounter-clockwise movement thereto, which movement engages the ears 202with the notches 203 of the totalizer-actuating segments 151 and 158, sothat the latter are again coupled together for unitary movement duringsubsequent machine operations.

Restoration of the lever 18-3 to its normal position, as shown in FIG.6, is obtained by upward movement of the detent 172 (FIG. 5). The detent172 is moved downwardly by depression of any one of the keys 103, 104,or 165, which, when released prior to the end of a machine operation,are moved upwardly by springs (not shown), thereby permitting the spring177, or the springs 177 and 171, to restore the detent 172, or thedetents 168 and 172, to its or their normal position or positions.Restoration of the detent 172 lifts the link 178 (FIG. 5) and rocks thecoupling control arm 179 (see also FIG. 6) clockwise to restore thelever 18 3 counter-clockwise to its normal position.

Transmission from the Itemizer Key to the Bank of Control Keys Asdepression of the Itemizer key 106, located at the right-hand side ofthe key board, is required to depress a blind key stem in the row ofcontrol keys 162405, located at the left-hand side of the keyboard, atransmission mechanism, shown in FIGS. 9 and 10, is provided.

Referring to FIGS. 9 and 10, the Itemizer key 106 is mounted on a guideplate 214 slidably secured on three pins 216 secured to a right sideframe 215 of the machine. Mounted on the guide plate 214 is a pin 217,which protrudes through an opening 218, formed in the machine side frame215, and engages a slot 219' of a right-hand arm 220 (see also FIG. 11)of a yoke 221. The yoke 221 is rotatably mounted on a shaft 222 and has,in its left-hand mm 223, a pin 224, pivoted to a link 225. The upper endof the link 225 is pivoted to a pin 226 secured in a blind key stem 227slidably mounted in the key frame of the row of control keys 102-405.

Upon depression of the Itemizer key 106, the yoke 221 is rockedcounter-clockwise, as seen in FIG. 10, through the pin 217 and the slot219, and clockwise, as seen in FIG. 11. Upon clockwise movement of thearm 223 (FIG. 11) of the yoke 221, the blind key stem 227, via the link225, is moved down into the path of movement of the setting membersassociated with the bank of control keys. The setting members of thebank of control keys are, therefore, closed around the blind key stem227 during a machine operation initiated by depression of the key 106 toposition a printing wheel and an indicator drum (not shown) in knownmanner to print and indicate a corresponding symbol.

Upon restoration of the Itemizer key 106, in a manner known per se,toward the end of the machine cycle initiated thereby, the blind keystem 227 is also restored to its normal position, as shown in FIG. 11.

Referring to FIG. 5, each of the detents 168 and 172 has a notch 228,which notches, in the normal positions of the detents, are in the pathof movement of the pin 226 and are so shaped that the detents are notmoved by downward movement of the pin 226. As the detents 168 and 172remain in their normal positions upon depression of the Itemizer key106', the totalizer-actua-ting segments 151 and 158 remain coupledtogether for unitary movement during machine operations initiated bydepression of the Itemizer key 106, thereby to effect entry of set-upamounts both into the item total-izer and into the selected one of theclerks totalizers.

Selection of the Clerks Totalizers on Line II As already mentioned, thetotalizers on line H are selected under control of the clerks keys 101(FIG. 1).

FIGS. 13 and 14 illustrate the setting mechanism associated with thebank of the clerks keys 101, which mechanism, with the exception of anarm 230' secured to its printer-setting segment 229, is similar to thesetting mechanism previously described in connection with FIGS. 2A and2B and associated with the amount keys 100.

The mm 239 (FIG. 13), through a link 231 (see also FIGS. 8 and 15), isconnected to an arm 232 mounted on the shaft 185, to which latter arm isrigidly secured a gear 233. The gear 233 (FIGS. 8 and 15) meshes with atoothed segment 235 pinned to a shaft 234 journaled in a left-handtotalizer side frame 236 (FIG. 15) and in an intermediate frame 237, theshaft 234 having a drum cam 23% (see also FIG. 7), provided with a camgroove 239, secured to its left-hand end.

A roller 241 is rotatably secured to an ear of an arm 24% and engageswithin the cam groove 239, the arm 240 being supported by the totalizerline II and by a shaft 242, both the totalizer line 11 and the shaft 242being laterally shiftable in the totalizer framework.

As all the denominational rows of the four interspersed clerkstotalizers are similar in construction, only the secend-highestdenominational order, shown in section in FIG. 7, will now be describedin detail.

As previously mentioned, each denominational order of the clerkstotalizers has associated therewith a grooved bushing 165, rotatableabout the totalizer line II. The grooved bushing (FIG. 7) has securedthereon the driving gear 164, adjacent its right-hand end, which isformed as a tens transfer ratchet wheel 243. A groove 24 1 of thegrooved bushing 165 has slidably mounted therein a rider 245 mountedWithin an annular groove in the totalizer line II.

The four interspersed totalizer wheels of each denominational order ofthe clerks totalizers are mounted on each grooved bushing 165, and eachis provided with internal teeth 247. Referring to FIG. 7, the rider 245is shown in mesh with the internal teeth 247 of the right-hand totalizerwheel 246 of the second-highest denominational order, to which positionit was moved during the preceding machine operation by the setting ofthe printer-setting segrnent 229 under the control of the depressed Aclerks key 101.

If, prior to a subsequent machine operation, either the B, C, or Dclerks key 101 is depressed, initiation of a machine operation causesthe setting members of the row of clerks keys to move theprinter-setting segment 229 and the arm 230 counter-clockwise, as seenin FIG. 13, to an extent corresponding to the depressed clerks key.Counter-clockwise movement of the arm 230 imparts clockwise movement tothe arm 232, through the link 231, and to the gear 233. Clockwisemovement of the gear 233, through the segment 235, impartscounter-clockwise movement to the shaft 234 and to the drum cam 238(FIGS. 8 and 15), which, through its cam groove 239 and the roller 241,carried by the arm 240, shifts the shaft 242 and the totalizer line IItoward the left, as seen in FIGS. 7 and 15. The rider 245 (FIG. 7) isthereby shifted to the left to an extent deter-mined by the depressedclerks key 101, and is engaged with the internal teeth 247 of theappropriate totalizer wheel 246.

Selection of the Item T otalizer on Line I From the Control I Keys Aspreviously mentioned, the machine is provided with an add-subtract itemtotalizer on the totalizer line I. The usual plus and minus wheels ofthe item totalizer are geared together for reverse rotation, so that,when the. plus wheels are selected and actuated, they will be driven inan additive direction, while, when the minus wheels are selected andactuated, they will be driven in an additive direction and reverselyrotate the plus wheels to enter the complement of the amount to besubtracted.

The selection of the plus wheels of the item totalizer occurs undercontrol of depression of the Ite-mizer key 106 during additive entries,and under control of the Total key 104 and the Sub-Total key 105 duringtotaltaking operations. The selection of the minus wheels of the itemtotalizer occurs under control of depression of the Subtract key 103, aswill now be explained in detail.

Referring to FIG. 11, the control keys 102-406 have associated therewitha sector 248, rigidly connected to a toothed segment 249, the sector 248being rotatably mounted on the main shaft 110. The segment 249 mesheswith a toothed segment 251 on a stud 250 and is rigidly connected to atoothed segment arm 252 in mesh with a toothed segment 254 secured to adrum cam 253. The drum cam is mounted on a stud 255 secured to theleft-hand totalizer side frame 236 (FIG. 7) and has a cam groove 256, inwhich is guided a roller 258 rotatably secured on an arm 257. The arm257 is secured to a laterally-shiftable shaft (not shown) and to thetotalizer line I (FIG. 7), which also is laterally shiftable in thetotalizer framework.

As all the denominational orders of the item totalizer are similar inconstruction, only the second-highest denominational order, shown insection in FIG. 7, is described in detail.

Each denominational order of the item totalizer has associated therewitha grooved bushing 157, which has secured thereto, adjacent itsright-hand end, which is f rmed as a tens transfer ratchet wheel 259,the driving gear 156. The driving gear 156 meshes with the intermediatewheel 154, and the grooved bushing 157 has a groove 261, in which isslidably mounted a rider 262, mounted Within an annular groove in thetotalizer line I.

The plus wheel 263 and the minus wheel 264 of each denominational orderof the item totalizer are mounted on the grooved bushing 157 and areprovided with internal teeth 265 and 266, respectively.

Also mounted on the grooved bushing 157 (FIG. 7), adjacent a hub 270,supporting the minus wheel 264, iS a sleeve 271, having a boring inwhich the rider 262 can move idly when the Single Item key is depressed,as will be explained shortly.

The rider 262 is adjustable to three positions by means of the totalizerline I, in the first of which, commencing from the left-hand side inFIG. 7, the rider 262 is in the boring 272, while, in its second andthird positions, the rider 262 engages the internal teeth 266 and 265,respectively.

=When the Single Item key 102 is depressed, a pin 273, secured in itskey stern, engages a cam surface 274 of the sector 248 and rocks thelatter clockwise. wise movement of the sector 248, through the toothedsegment 249, the toothed segment 251, the segment arm 252, and thetoothed segment 254, moves the drum cam 253 clockwise, as seen in FIG.11. Clockwise movement of the drum cam 253, through its groove 256, theroller 258 (FIG. 7), and the arm 257, moves the totalizer line I to theleft, as viewed in FIG. 7, to a position in which the rider 262 islocated in the boring 272 of the sleeve 271.

As the totalizer-actuating segments 151 and 158 (FIG.

Clock- 6 4) remain coupled to each other upon depression of the SingleItem key 102, both the grooved bushing 157 on line I and the groovedbushing on line II are driven by the totaliZer-actuating segments if anamount has been entered into the related denominational order. However,as the rider 262 is located in the boring 272, rotation of the groovedbushing 157 is ineffective to impart movement to either the plus wheel263 or the minus wheel 264.- Therefore, initiation of a machineoperation under control of the Single Item key 102 is effective to entera set-up amount only into the totalizer on line II selected by thedepressed clerks key 101.

At the conclusion of a Single Item entry, the sector 248 (FIG. 11)remains in the position to which it was set by the depression of theSingle Item key 102, in which position a cam surface 275 is in the pathof movement of the pin 226 in the blind key stem 227 of the Itemizer key106.

When the Itemizer key 106 is depressed, its pin 226 engages the camsurface 275 of the sector 248 and rocks the latter counter-clockwise anextent sufficient to cause the rider 262 to be engaged with the internalteeth 265 of the hub 267 supporting the plus wheel 263, through thetrain of mechanism previously described.

As the totalizer-actuating segments 151 and 158 (FIG. 4) remain coupledto each other upon depression of the Itemizer key 106, both the groovedbushing 157 on line I and the grooved bushing 165 on line II are driven'by the totalizer-actuating segments if an amount has been entered intothe related denominational order. Therefore, the initiation of a machineoperation under control of the Itemizer key 106 is effective to enter aset-up amount both into the plus wheel 263 on line I and into theselected totalizer wheel 246 on line II.

Referring to FIGS. 7 and 8, the plus wheel 263 of the item totalizermeshes with an intermediate Wheel 277 mounted on a shaft 276. Theintermediate wheel 277, through a hub 278, is rigidly connected to afurther intermediate wheel 279, which meshes with a pinion 280. Thepinion 280 is mounted on a stud 281, secured to the totalizer frame 237,and meshes with the minus wheel 264. Consequently, if the plus wheel 263is driven clockwise (FIG. 8) during the entry of a positive amount, acorresponding counter-clockwise movement is imparted, through thegearing 277278279280, to the minus Wheel 264.

If, after the entry of the positive amounts into the item totalizer, itis desired to subtract an amount therefrom, this is effected bydepression of the Subtract key 103 (FIG. 11).

After the last positive entry, the sector 248 remains in the position toWhich it was moved by depression of the :Item1zer key 106 (FIGS. 1, 9,and 10), in which position a cam surface 282 is in the path of movementof a pin 283 secured in the stem of the Subtract key 103.

When the Subtract key 103 is depressed, the pin 283 engages the camsurface 282 and moves the sector 248 clockwise (FIG. 11) to shift thetotalizer line I toward the left, as seen in FIG. 7, to a position inWhich the rider-262 engages the internal teeth 266 of the hub 270supporting the minus wheel 264. The shifting of the totalizer line I iseffected through the train of mechamsm previously described inconnection with the Itemizer key 106.

As the totalizer-actuating segments 151 and 158 (FIG. 4) are uncoupledby depression of the Subtract key 103, only the grooved bushing 157 ontotalizer line I is driven by the totalizer-actuating segment 151, if anamount has been entered into the related denominational order.

Rotation of the grooved bushing 157 to the value to be subtracted isimparted additively, through the rider 262, to the minus wheel 264,which, through its gearing 280, 279, and 277, reversely rotates the pluswheel 263 to 13 subtract therefrom the amount added into the minus wheel264. Thus, the plus wheels 263 contain the total of all the items of amultiple-item transaction, less the amount subtracted therefrom.

When a total or a sub-total is taken from the item totalizer in themanner described hereinafter, the rider 262 (FIG. 7) is engaged with theinternal teeth 265 of the hub 267 supporting the plus wheel 263.Therefore, the sector 248 (FIG. 11) is provided with two cam surfaces284 and 285, which Will cause the sector 248 to move the same extent asthe cam surface 275, cooperating with the pin 226 of the lternizer key196.

A pin 286, secured to the stem of the Total key 104, cooperates with thecam surface 284, while the cam surface 285 has associated therewith apin 287, secured to the stem of the Sub-Total key N5.

As the cam surfaces 284 and 235 impart a similar degree of movement tothe sector 248 as does the cam surface 275, the internal teeth 265 ofthe hub 267 supporting the plus wheel 263' will be engaged with therider 262.

The totalizer-actuating segments 151 and 158, as already mentioned, areuncoupled by depression of the keys 184 and 165 during a total-takingoperation or during .a sub-total-taking' operation, so that only thegrooved bushing 157 is actuated.

Referring to FIG. 11, the sector 248 has a further cam surface 283 forcooperation with the pin 283 of the Subtract key 103. The cam surface288, after a machine operation has been initiated by the Single item 7key 102, is positioned in the path of movement of the pin 233 andpositions the rider 262 in the subtract position when the first entry ofa multiple-item entry, following a single-item entry, is initiated bydepression of the Subtract key N3.

It is obvious from FIG. 11 that the cam surfaces of the sector 248associated with the keys 102 to MS, as well as with the key 186,terminate in a notch 28%. If any one of the keys 1l21G6-for instance,the Subtract key 1% (FIG. 11)-is in its depressed position, its pin 283rests in the notch 28) associated therewith and locks the sector 24-8against movement. When the sector 248 is locked, the cam surfacesthereof are in the path of movement of the pins secured to theundepressed keys, so that uhdepressed keys are locked against depressionwhile any one of the keys is depressed. Therefore, .as the sector 248 islocked against movement, the totalizer line I also is locked in itsmoved position.

T ens Transfer Mechanism for the Item Totalizer Referring to FIGS. 7 and8, a tens transfer pin 2% is secured only to the plus wheels 263 of theitem totalizer and cooperates with an operating pawl 2531 mounted on ashaft 292 and rigidly connected, through a hub, to a supporting pawl 2%.The supporting pawl 293 has two notches, 294 and 295, which support anear 2% of a tens transfer pawl 297, cooperating with the tens transferratchet wheel 259 of the next higher order. The supporting pawl 293 andtens transfer pawl 297 are resiliently connected by a spring 3154.

When the tens transfer pawl 297 is in a non-prepared condition, its car296 is supported by the notch 294, while the ear is supported by thenotch 295 when the tens transfer pawl 297 is in its prepared condition.

The tens transfer pawl 297 is pivoted to a tens transfer lever 299,which normally is held in engagement with a shaft 301 by means of aspring 360. Secured to the downwardly-extending arm of each tenstransfer lever 299 is a roller 392, which cooperates with a tenstransfer operating cam 303 pinned to the shaft 185.

When the shaft 185 is driven counter-clockwise, the cam 303 engages theroller 302 toward the end of a machine cycle and rocks the tens transferlever 299' clockwise, whereby an upward movement is imparted to the tenstransfer pawl 297.

The upward movement of the tens transfer pawl 297 is ineffective toeffect a tens transfer when its ear 2% is supported by the notch 294 ofthe supporting pawl 2%.

However, when the ear 2% is supported by the notch 295 of the supportingpawl 293, the tens transfer pawl 297, upon upward movement, engages thenext higher order tens transfer wheel 259' and rotates the latter onestep clockwise (FIG. 8) in unison with the grooved bushing 157 (FIG. 7)to enter one unit into the next higher order of the item totalizer.

The direction in which the plus wheel 263 of the next higher order ofthe item totalizer is driven depends upon whether the rider 262 is inmesh with the internal teeth 265 or 266. During an adding operation, therider 262, as previously described, engages the internal teeth 2&5 ofthe plus wheel 263, so that the latter, when a tens transfer operationis effected, is rotated clockwise one unit. When a subtract operation isperformed, the rider 262 engages the internal teeth 266 of the minuswheel 264, so that the latter, when a tens transfer operation iseffected, is rotated counter-clockwise one unit.

In order to enable the tens transfer pawl 257 to be supported by thenotch 295, clockwise movement of the plus wheel 263 (FIG. 8) as it movesfrom 9 to O in adding operations, or counter-clockwise movement as itmoves [from 0 to 9 in subtract operations, causes its pin 2% to rock theoperating pawl 291 and the connected supporting pawl 2% a distancecounter-clockwise sufficient to permit the spring 304 to move the ear 2%of the tens transfer pawl downwardly into the notch 295. Therefore, whenthe tens transfer pawl 297 is driven as described above, a unit will heentered either additively or sub-tractively into the next higher orderof the item totalizer.

During the operating stroke of the tens transfer pawl 297, it is rockedcounter-clockwise by the next tooth of the ratchet wheel 259, againstthe action of the spring 364, until at the end of its stroke its ear 296rises above the level of the notch 294 in the supporting pawl 293 topermit the latter, which rotates clockwise with the pawl 297, tore-engage its ear 2% with the notch 294 during return movement of thepawls 297 and 293.

Tens Transfer Mechanism for the Clerks Totalizcrs A tens transfer pawl385 (FIG. 8) cooperates with the tens transfer ratchet wheel 243 securedto the grooved bushing 165, which pawl 305 is secured to adownwardlyextending arm of the tens transfer lever 29). An ear 3% of.the pawl 305 is normally supported by one, 337, of two notches 3l7 and308 of a supporting pawl 309 associated with the next lowerdenominational order.

The supporting pawl 309 is mounted on the shaft 162 and has fourextensions 318 (only one of which is shown in FIG. 8), each of which isin the path of movement of a tens transfer pin 311, one of which issecured to each of the totalizer wheels 246 (see also FIG. 7 A spring312 holds the tens transfer pawl 305 in resilient engagement with thesupporting pawl 309.

When the tens transfer lever 299 is driven clockwise by the cam 303, aspreviously described, a leftward movement is imparted to the tenstransfer pawl 365, as seen in FIG. 8. When the ear 306 of the pawl 305is supported by the notch 307 of the pawl 33%, as seen in FIG. 8,leftward movement of the pawl 3%5 is ineffective to impart movement tothe ratchet wheel 243.

However, when a totalizer wheel 24-6 moves from 9 to 0, its tenstransfer pin 311 engages the corresponding extension 310 of thesupporting pawl 3439 and rocks the latter counter-clockwise to enablethe spring 312 to move the tens transfer pawl in the next higherdenominational order to the prepared position, in which the ear 366 issupported by the notch 308. When leftward movement is now imparted -tothe tens transfer pawl 395, the latter engages the tens trans-ferratchet wheel 243 and rotates the latter clockwise an extent to causethe grooved bushing 165 (FIG. 7), through the rider 245, to impart oneunit of movement to the selected totalizer wheel 246.

